Fast report: seismogenic structure of the 2025 M6.4 dapu earthquake sequence in western Taiwan revealed by a deep-learning-empowered earthquake catalog
Year: 2025
Type: article
Abstract: This study investigates the three-dimensional seismogenic structures associated with the 2025 M6.4 Dapu earthquake in western Taiwan and compares these results with the relocated instrumental earthquake catalog. Utilizing a deep-learning-empowered earthquake cataloging method, 6,805 seismic events were identified from January 20 to 31, 2025, achieving a completeness magnitude ( $$M_{c}$$ M c ) of 0.4. Notably, the M6.4 earthquake sequence involved the reactivation of a potentially existing fault system, characterized by an east-dipping plane at $$27^\circ$$ 27 ∘ between 5 and 10 km in depth and a west-dipping plane at $$37^\circ$$ 37 ∘ between 10 and 15 km depth. The distribution of aftershocks and triggered seismicity reveals a complex pattern of strain accumulation that influences nearby active faults. These findings underscore the necessity of continuous and detailed monitoring to better understand and potentially mitigate future seismic hazards in this region.
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,090
Awards: Investigating the Fault Rupture Zone of the 2022 Chishang Mw 7.0 Earthquake: Tremor Analysis and Seismic Tomography, Shallow Velocity Model, Deformation Mechanism and Geological Structure Studies in Tainan Area, Taiwan Earthquake Research Data Center( II ), Seismic Potential Assessment of Mudstone Deformation Regions in Taiwan and Indonesia: a Case Study of the Chungchou Fault, Correlation between Seismic Swarms and Fluids at the Deformation Front of the Taiwan Orogenic Belt(2)
OpenAlex ID: W4408994167